REPAIR /MAINT OF TRANSFORMER, HT LINES AND CONNECTED WORKS FOR AOR OF HQ 13 SECT AND HQ 06 SET UNDER AGE (I) CIF (R)

Amount

Taking down of existing Unsv danger plate and S&F in replacement of same item of 1.6 mm thick mild steel sheet vitreous enamelled white with letters, figures and conventional skull and bones in signal red colour and fixed with M S Clamps, bolt and nut approved size for HT poles, 25 x 20 cm size including taking out old unserviceable danger notice plate complete all as specified and directed.

Taking down existing Unsv/Rusted/Broken cross arms, bracing, supports, clamps and back plates and S&F in replacement of same item fabricated from Structural Steel Sections including Nuts, Bolts, Washer, welding, bending cold or hot, drilling holes for Bolts, in any shape or size as indicated/ directed and inclusive of two coats of Aluminium Paint over a Coat primer, complete all as specified and as directed.

Taking down existing Unsv/broken Switch Air Break Gang Operated for 11 KV grade and S&F replacement of same item triple pole vertically mounted having 12 insulator and fitted on steel frame suitabe for, current rating 400 Amps, mechanically operated mechanism consisting of Operating Rod of GI Pipe 25mm bore (dia) ‘light grade’ of suitable Length worked From Ground Level and with Locking Arrangement Mild Steel Flat Iron Clamp 50x6mm including Expulsion Fuse, Single Pole, Channel type/ drop out type suitable as per Site requirement with Working Pressure 11 KV grade of capacity 50 to 100 Amps including taking down unservice-able Fuse , complete all as specified and as directed.

Taking down existing Unsv/broken anit climbing devices from pole and S&F in replacement of same item, comprising 2.24mm dia galvanised steel 2-strand barbed wire with 2.00mm dia barbs wrapped spirally round poles, to a length of 0.5 to 1.0 metre clamped and properly secured or as ordered complete all as specified and directed. Note :- Clamps will be measured separately.

Taking down broken/defective PCC/steel tubular pole, keeping away from site and S&F of steel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts and screws as specified type 410 SP-55 (11 meters long) and applying two coats of aluminum paint over a coat of red oxide primer,the embeded portion shall be applied with two coats bituminous paint complete all as specified and directed.Note : PCC & Earth work will be measured and paid seperately.

Taking down defective Lightning Arrester and S&F replacement of same item expulsion type complete with all Fittings Transmission Class discharge capacity 65 KA suitablefor working pressure of 11000 Volts, complete all as specified and directed.

Supply & laying in replacement of HT XLPE Cable, insulated, screened, PVC bedded, Galvanised Steel Strip or Wire armoured, Electic Power Cable (heavy duty) with Aluminium Conductor, 11 KV, ‘Earthed Grade, cross-sectional area 95 Sqmm 3 Core, laid in Pipe/ Ducts/ Trenches/ under Floor/under Road including Testing and disconnecting & taking out of existing HT cable of any type and size, complete all as specified and as directed. NOTE : Earthworks, HDPE pipe for mechanical protection of cable etc. will be measured and paid under appropriate Items.

Supply & laying in replacement of LT XLPE insulated, screened, PVC bedded galvanized steel strip or wire armored, electric power cable (heavy duty) with aluminium conductor, 1100 volts (earthed) grade cross sectional area 120 sqmm, 3.5 core laid in trenches/ pipes/ ducts/ wall/ boarings with necessary cable lugs and glands, nuts, bolts and washers etc and testing including disconnecting and taking out of existing LT cable of any type and size complete all as specified and directed. Note:- Earthworks, HDPE pipe for mechanical protection of cable etc. will be measured and paid under appropriate Items.

All as per item No. 08 above but cross-sectional area 95 sqmm, 3.5 core

M&L for replacement of outdoor cable end termination joint Heat shrink type suitable for 11 KV 50 to 95 sq mm 3 core HT XLPE 11000 volts heavy duty armoured cable complete all as specified and directed.

Cable jointing kit for replacement of 11 KV (earthed) heat shrinkable, straight through joint out door suitable for cross sectional area 95 Sqmm, 3 core aluminium conductor XLPE Cable including jointing material and accessories complete and cutting of old cable complete all as specified and directed by Engineer-in-Charge. Note:- (i) Fault location shall be detected and cost of same shall deemed to be included in the quoted rate including necessary earth work.

Dismantling and taking down any type of transformers indoor/outdoor,by disconnect HT & LT connections from plinth/ platform/ pole mounted and shifting to workshop and refix it back on site after all repairs and testing and commissioning, conducting all tests and complete of work all as specified and directed. Note: (i) LV/HV bushes, Silica gel breather etc will be measured and paid for separately. (ii) Draining out all the transformer oil, dismantling and inspection of transformer core and winding including taking out burnt out winding/insulation of LV/HV coils in the presence of the authorized rep and rewinding the damaged core wih suitable gauge of copper winding wire winding, drying out in Heat chamber till specified IR values are obtained and providing new insulation materials, gasket, nuts, bolts, checking of leakages and rectifying the same by welding etc. (iii)While removal of the core care shall be taken not to spoil the transformer oil and required f iltration including topping up shall be carried out, which shall be measured and paid under respective items of schedule for carry out repair (rewinding) works as directed and reinstall back in original location including re-connection of HT & LT supply system including testing complete all as specified and directed for the following capacity. (Note spare items required for repair including rewinding will be measured and paid seperately under respective items of Sch. (iv) Placing/removing stand by transformer in the place of defective transformer under repair will be the responsibility of the contractor, stand by transformer of same rating and capacity will be provided by the Contractor till refixing/replacing of repaired transformer. Quoted rate shall be deemed to include hiring charges of standby transformer till commissioning of repaired transformer and satisfaction of Engineer in Charge. If standby Transformer not provided within 8 hours of breakdown, a penalty recovery will be done from RAR bill as follows: a) For first day Rs 5000 b) For next every day Rs 3000. (v) Required tools & plant including lifting arrangement, transport etc shall be included in the rate quoted. (vi) Any damage occurred during lifting/ transporting, the firm will be responsible to rectify such defect free of cost. FOR 63 KVA to 160 KVA

All as per item No. 12 above but for 200 KVA to 400KVA

Rewinding (Double paper covering) of HT coils of any size for the above item no and type of transformer including cleaning the burnt out insulating materials, brazing and rewinding with appropriate turns and size of super enamelled copper winding wire including filling insulation paper etc all as specified in particular specifications. Note :- (i) Burnt coils shall be handed over to the contractor by the Engineer-in-Charge through issue voucher for rewinding giving reference of transformer i.e. make Capacity, MES/SM number of transformer etc. (ii) Weight, number of turns, gauge, insulation of winding wire shall be as per OEM. ((iii) Work of rewinding work shall be carried out throught OEM or their authorised vendor only. (iv) Old winding copper wire shall be contractor property and necessary amount as per schedule of credit shall be deducted from the contractor due payment.

All as per item No- 14 above but of LT coils of any size and type of transformer including cleaning the burnt out insulating materials, brazing and rewinding with appropriate turns and size of super enamelled copper winding wire including filling insulation paper etc all as specified in particular specifications. Note :- (i) Burnt coils shall be handed over to the contractor by the Engineer-in-Charge through issue voucher for rewinding giving reference of transformer i.e. make Capacity, MES/SM number of transformer etc. (ii) Weight, number of turns, gauge, insulation of winding wire shall be as per OEM. ((iii) Work of rewinding work shall be carried out throught OEM or their authorised vendor only. (iv) Old winding copper wire shall be contractor property and necessary amount as per schedule of credit shall be deducted from the contractor due payment.

Materials and labour for replacement of silica gel of breather including providing silica gel as per the existing size / model complete all as specified and directed.

Supply & fixing in replacement breather assly complete with first fill of silica gel all as specified and directed for 63 KVA-160 Kva transformer as per existing make and size.

All as per item No- 17 above 200 KVA - 400 KVA Transformer. complete all as specified and directed.

Materials and labour for replacement of temperature gauge as per the existing size / model complete all as specified and directed.

Supply and fixing in replacement of burnt out/ damaged LV bushes with porcelain insulator and replace with Brass LV bushes, nuts , check nuts, rubber washer etc complete as per the existing size / model, for transformers of capacity complete all as specified and directed for 63 KVA - 160 KVA transformer.

All as per item No- 20 above for 200 KVA to 400KVA transformer

Supply and fixing in replacement of burnt out/ damaged HV bushes with porcelain insulator and replace with Brass HV bushes, nuts , check nuts, rubber washer etc complete as per the existing size / model, for transformers of capacity complete all as specified and directed for 63 KVA - 160 KVA transformer.

All as per item No 22 above for 200 Kva to 400KVA transformer

Dehydration / Filtration of transformer oil by using Filter Plant and till obtaining the oil dielectric strength 60 KV including topping up of transformer oil to the required level in various transformers located outdoor / indoor sub stations complete all as specified and directed. (Note :- Transformer oil for topping up will be measured and paid separately)

Supply and replacement of topping up of new low viscosity transformer oil from sealed drums, after testing the correct dielectric strength up to 60KV duly de-hydrated complete all as specified and directed.

S&F in replacement of 32 mm dia gunmetal drain valve of transformer as per existing one complete all as specified and directed.

M&L for preparation of old painted steel or iron surfaces of transformer of 50 to 400 KVA , 11/0.433 Volts capacity transformers by scrapping with steel wire brush/scrapper emery paper, etc. and applying two coats of synthetic enamel smoke grey paint over a coat of red oxide primer (painting shall be done by spray machine) including writing of SM No, MES No etc. at prominent place/location of transformer with black synthetic enamel thick paint in white back ground complete all as specified and directed.

Supply and fixing of Ring type Copper thimble of size 120 sqmm for terminal end of HT cable suitable for 11KV high Voltage carrying high quality material complete all as specified and directed.

Supply & fixing of High density polyethylene pipes (HDPE) of bore 50mm with pressure rating 6 kgf/cm2 laid in trenches of required length for protection of cable in trenches, complete including necessary fittings etc complete all as specified and directed.

M&L in replacement for Stay assy complete with accessories as shown in electric plate No.1 stay rod 16mm incl taking down complete (loop type insulator stay clamps excavation & concrete measured separately) complete all as specified and directed.

M&L for Loop type insulator vitreous porcelain, brown or green with overall dimensions 65 x 90 mm, clearance of hole 16mm all as specified and as directed.

M&L in replacement pin type porcelain , vitreous, white, brown or green insulator including one galvanized mild steel spindle, two G I washers and one G I nut, 150 mm height and 150 mm dia suitable for 11000 Volts grade complete all as specified and directed.

M&L in replacement for Disc Insulator porcelain viterous ,Whit/Brown/Green 145mm high and 255 mm dia ball and socket type for working 11000Volts complete all as specified and directed.

M&L for PCC 1:4:8 type D-2 using 40mm graded crushed stone aggregate as in foundation of poles etc including necessary form work, complete all as specified & directed.

M&L for PCC 1:3:6 type C2 using 40mm graded crushed stone aggregate as in stay etc including necessary form work, complete all as specified & directed.

M&L for PCC 1:2:4 type B1 using 20mm graded crushed stone aggregate as in coping around pole including necessary form work, complete all as specified & directed.

Material and labour for alluminium conductor steel reinforced (ACSR) of any size stringing properly on insulators on pole and binding with alluminium tape /binding with connectors, jumpers etc including dismantling and taking down old unserviceable ACSR conductor complete all as specified and directed.

Restringing of HT overhead line conductor comprising of three run ACSR conductor and two run GI earth contunity conductor after opening from insulators, including restraining same and winding on insulator with proper size of binding wire upto permissible sag complete all as specified and directed by Engineer-in-Charge. Note :- Quoted rate shall be deem to included the cost of winding wire and replacement of insulator if damaged during restraining of conductor. (ii) Insulator shall be paid separately as supply only under respective item of this schedule.

S&F Galvanised Steel Wire 3.15 or 4.0mm dia as Earth Continuity Conductor and fixed to Pole, binding with Aluminium Binding Wire, complete all as specified and as directed. NOTE : Cost of Binding Wire will deem to be included in the Quoted Unit Rate.

Excavation in trenches not exc. 1.5m wide and not exc. 1.5m in depth; for foundation etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sqm on plan and n exc 1.5m in depth in any type of soil and getting out, complete all as specified and as directed.

All as per Srl item No. 40 above but depth exc 1.5m but n exc 3m.

Returning filling in soil including spreading leveling watering and well rammimg in layer n exc 25 cm complete all as specified and directed

Removing excavated soil not exc 50m & depositing where directed at a level not exc 1.5m above the starting point all as specified and directed

Material and labour for painting to steel tubular pole 11/9 metre long with two coats of synthetic enamel silver up to below 1.5M from Top edge and 1.50 metre height from ground level in 30 cm alternative black and red strips and remaining portion with alluminium paint incl numbering of pole no by stensils and MS frames like channel,clamps, angle, D-clamps etc with two coats of aluminium paint complete all as specified and directed.

Earthing complete with galvanised steel earth plate electrode 60cmx60cmx6mm thick buried directly in ground (earth pit not less than 2.25 metre deep below normal ground level) with top edge of plate not less than 1.5 metre below ground level, connecting to galvanised iron wire 4.0mm dia (as earth lead wire), by means of bolt, nuts, check nuts and washer of galvanised and earth wire protected by provision of galvanised iron pipe light grade, 15mm bore including provn of concrete pit in PCC M-15, type B-I using 20mm graded crushed stone aggregates with 40mm thick precast cover of size 550 mm X 550 mm X 75 mm of RCC M-15, type B-I, reinforced with XPM (weight not less than 4 kg/ Sqm) and frame of angle iron 25x25x3mm with lugs 2 Nos and with 6mm dia mild steel bar handle made to shape, galvanised iron medium grade 20mm bore pipe for watering perforated at bottom 1.75 metre long placed on top edge of earth plate, common salt and charcoal filling, test point made out of phosphorous bronze with fixing arrangement, funnel, wire mesh and including earth work in any type of soil, returning filling in and removal of surplus soil to a distance not exceeding 50 metre, all as per electrical plate No. 3 of SSR 2009 Part-I and connection to earth test point all as specified and testing on completion.

Earthing complete with galvanised steel earth plate electrode 60cmx60cmx6mm thick buried directly in ground (earth pit not less than 2.25 metre deep below normal ground level) with top edge of plate not less than 1.5 metre below ground level, connecting to galvanised iron strip of size 32x6 mm (as earth lead wire), by means of bolt, nuts, check nuts and washer of galvanised and earth wire protected by provision of galvanised iron pipe light grade, 15mm bore including provn of concrete pit in PCC M-15, type B-I using 20mm graded crushed stone aggregates with 40mm thick precast cover of size 550 mm X 550 mm X 75 mm of RCC M-15, type B-I, reinforced with XPM (weight not less than 4 kg/ Sqm) and frame of angle iron 25x25x3mm with lugs 2 Nos and with 6mm dia mild steel bar handle made to shape, galvanised iron medium grade 20mm bore pipe for watering perforated at bottom 1.75 metre long placed on top edge of earth plate, common salt and charcoal filling, test point made out of phosphorous bronze with fixing arrangement, funnel, wire mesh and including earth work in any type of soil, returning filling in and removal of surplus soil to a distance not exceeding 50 metre, all as per electrical plate No. 3 of SSR 2009 Part-I and connection to earth test point all as specified and testing on completion.

Earth continuity conductor passing through PVC Conduit of size 40 mm main earthing lead fixed to wall on batten or recess or chases or burried in ground or drawn in conduit/pipe or any other indicated situation for loop earthing etc as required 32x6 mm galvanised iron strip complete all as specified and directed by Engr-in-Charge.

Cutting and trimming of tree branches to clear the over head lines in the arc of HT over head lines/feeders (including repairing and jointing of ACSR conductor if damaged during cutting of trees branches) and removal of trimmed branches of trees and depositing the same in waste bin inside the campus all as specified and directed (Span length not more then 50 Mtr).

Cutting of green growth and wild grass by manual labour or by machine at electrical installation premises,around the pole,along the fencing,removing rubbish from the site of work and depositing where directed not exc 100 Mtr from the starting point. complete all as specified and directed. Note :- The item shall be operated maximum 4 times in the entire period of the contract and the measurement will be taken every time independently for the payment.

Deduct Credit Amount as per Schedule of credit as details given on Srl Page No 29 of tender doucments.

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